Re: [Qemu-devel] qemu-kvm-1.0 crashes with threaded vnc server?

[Corentin Chary]

On Mon, Feb 13, 2012 at 10:24 AM, Peter Lieven <address@hidden> wrote:
>
> Am 11.02.2012 um 09:55 schrieb Corentin Chary:
>
>> On Thu, Feb 9, 2012 at 7:08 PM, Peter Lieven <address@hidden> wrote:
>>> Hi,
>>>
>>> is anyone aware if there are still problems when enabling the threaded vnc
>>> server?
>>> I saw some VMs crashing when using a qemu-kvm build with
>>> --enable-vnc-thread.
>>>
>>> qemu-kvm-1.0[22646]: segfault at 0 ip 00007fec1ca7ea0b sp 00007fec19d056d0
>>> error 6 in libz.so.1.2.3.3[7fec1ca75000+16000]
>>> qemu-kvm-1.0[26056]: segfault at 7f06d8d6e010 ip 00007f06e0a30d71 sp
>>> 00007f06df035748 error 6 in libc-2.11.1.so[7f06e09aa000+17a000]
>>>
>>> I had no time to debug further. It seems to happen shortly after migrating,
>>> but thats uncertain. At least the segfault in libz seems to
>>> give a hint to VNC since I cannot image of any other part of qemu-kvm using
>>> libz except for VNC server.
>>>
>>> Thanks,
>>> Peter
>>>
>>>
>>
>> Hi Peter,
>> I found two patches on my git tree that I sent long ago but somehow
>> get lost on the mailing list. I rebased the tree but did not have the
>> time (yet) to test them.
>> http://git.iksaif.net/?p=qemu.git;a=shortlog;h=refs/heads/wip
>> Feel free to try them. If QEMU segfault again, please send a full gdb
>> backtrace / valgrind trace / way to reproduce :).
>> Thanks,
>
> Hi Corentin,
>
> thanks for rebasing those patches. I remember that I have seen them the
> last time I noticed (about 1 year ago) that the threaded VNC is crashing.
> I'm on vacation this week, but I will test them next week
> and let you know if I can force a crash with them applied. If not we should
> consider to include them asap.

Hi Peter, any news on that ?



-- 
Corentin Chary
http://xf.iksaif.net